Thunder Bowling

Indeed - not to be confused with weather phenomenon - The act of dropping a deuce accompanied by extreme flatulence.

Thunder bowling can cause quite a splash of precipitation as well, in addition to its characteristic, porcelain-amplified sound - remarkably similar to the call of an elk in distress.

Kevin: "Man, are you okay? Between the sound and the stench, you've got everyone nervous."

Jim: "Sorry. That bean burrito's got me thunder bowling. Let's get out of here before they see what a mess I've made."

Thunder in the Bowl

This occurs whenever you take a shit, and your insides sound like thunder rumbling in the distance. Usually associated with really bad diarrhea or a stomach bug

Whenever I was running, I got the bubble guts, but when I went to release the beast, it sounded like thunder in the bowl. Wowza!